Restore the electrical stability and signal integrity of your outdoor unit with the Samsung Air Conditioner Sub-EMI PCB Assembly DB93-11110A. This specialized board serves as an Electromagnetic Interference (EMI) filter, designed to suppress high-frequency noise and electrical surges generated by the inverter system or external power fluctuations. By filtering the incoming power supply, this board protects the main inverter PCB and the compressor from electrical stress and prevents the unit from interfering with other electronic devices in your home. A failure in the EMI board can cause the unit to trip circuit breakers, fail to power on, or trigger communication error codes between the indoor and outdoor units.

The DB93-11110A is engineered with heavy-duty inductors, capacitors, and varistors capable of handling high-voltage loads. Its robust design includes a dedicated grounding circuit to safely dissipate electrical noise, ensuring the sophisticated electronics of your inverter system operate within their designed parameters. This genuine OEM part is essential for maintaining the long-term reliability and safety of the outdoor condenser electronics.

Installation / Replacement Instructions

1. Safety First: Turn off the air conditioner at the thermostat and disconnect the power supply at the outdoor disconnect box or the main circuit breaker. Warning: Inverter systems contain high-voltage capacitors that can hold a charge. Wait at least 10 minutes after disconnecting power before servicing.
2. Access the Control Box: Remove the side or top panel of the outdoor condenser unit to expose the electrical control box.
3. Locate the EMI Board: The DB93-11110A is typically the first board the main power supply wires connect to upon entering the outdoor unit.
4. Document the Wiring: Take a clear photo of all wire connections, including the power input, the output leads going to the main PCB, and the ground wire.
5. Disconnect and Swap: Carefully unscrew the terminal blocks or pull the spade connectors from the old board. Remove the mounting screws holding the board to the chassis and install the new DB93-11110A.
6. Secure Connections: Reattach all wires to their correct terminals according to your photo. Ensure the ground wire is securely fastened to prevent electrical noise issues.
7. Reassemble and Test: Replace the electrical covers and unit panels. Restore power and verify that the unit starts smoothly without triggering any electrical or communication errors.

Compatible with select Samsung inverter outdoor units, this OEM-quality EMI filter board provides the essential electrical protection required for modern high-efficiency climate control.

Key Features
- AC Sub-EMI PCB Assembly – Part number DB93-11110A
- Electromagnetic Interference Filtering – Protects sensitive inverter electronics from electrical noise
- Surge Protection – Guards the system against power fluctuations and voltage spikes
- High-Voltage Capability – Designed for the electrical demands of outdoor condenser units
- Compatible with Select Samsung Models – Precision-matched for factory-standard electrical specs
- OEM-Quality Part – Restores original safety standards and electrical signal integrity